22270710 has 128 divisors (see below), whose sum is σ = 69009408. Its totient is φ = 4464000.

The previous prime is 22270627. The next prime is 22270723. The reversal of 22270710 is 1707222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 71455 + ... + 71765.

It is an arithmetic number, because the mean of its divisors is an integer number (539136).

Almost surely, 2^22270710 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22270710, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34504704).

22270710 is an abundant number, since it is smaller than the sum of its proper divisors (46738698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22270710 is a wasteful number, since it uses less digits than its factorization.

22270710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 22270710 is about 4719.1853110468. The cubic root of 22270710 is about 281.3485541031.

Adding to 22270710 its reverse (1707222), we get a palindrome (23977932).

The spelling of 22270710 in words is "twenty-two million, two hundred seventy thousand, seven hundred ten".